In many stories written by Lovecraft and other Lovecraftian authors, reading or even possessing the Necronomicon is said to lead to insanity and has terrible consequences. That might explain...

One of the greatest opening lines of any book has to be the first two lines of Lovecraft's The Call of Cthulhu: "The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far."